Cases of unethical behavior

4OR has a strict policy against plagiarism. All papers are screened against plagiarism using iThenticate. 4OR is a member of CrossCheck by CrossRef and iThenticate. iThenticate is a plagiarism screening service that verifies the originality of content submitted before publication. iThenticate checks submissions against millions of published research papers, and billions of web content. Authors, researchers and freelancers can also use iThenticate to screen their work before submission by visiting www.ithenticate.com.

Some cases of plagiarism are reported below.

• Papers with full details on the following cases.
  
  • A case of plagiarism: Danut Marcu., 4OR Vol 4: 1, 11-13 (2006)
  • Plagiarism again: Sreenivas and Srinivas, with an update on Marcu, 4OR Vol 7: 1, 17-20 (2009)
• A first case of plagiarism: Danut Marcu.
  
  • The plagiate (381KB)
  • The Wikipedia entry about Marcu
  • List of "publications by" Danut Marcu. (263KB)
  • Another piece from an independent source: Alexander Soifer, The Case of Dr. Danut, Marcu, Geombinatorics XVI(3), 2007, 293-296
• Another case of plagiarism: M. Sreenivas and T. Srinivas.
  In November 2007 the following new case was observed.
  
  • The plagiate (566KB)
  • Plagiate from: S. Storoy, The Transportation: More-for-less Criterion, Optimization Online, 2007
  • Another plagiate (686KB)
  • Yet another plagiate (650KB)
  In august 2009 the following letters were received, apparently disculping Dr. Srinivas
  • Letter From Dr Srinivas (453KB)
  • Letter From Mr Sreenivas (453KB)
  This and related plagiarism cases concerning these authors has been investigated by SIAM (Society for Industrial and Applied Mathematics) in october 2009, culminating in the following SIAM report on the investigation of plagiarism by Sreenivas and Srinivas that confirms our findings.
• A surprising, elaborate cheating scheme is reported in the editorial "A brand new cheating attempt: a case of usurped identity", published in the December 2016 issue of 4OR.

Banned from publication in 4OR for plagiarism:

• Danut Marcu
• M. Sreenivas
• T. Srinivas
• Jinfang LIU
  Finance and Economics School of Hunan University of Technology, Zhuzhou, China
• Yan Li (Hebei University of Technology, Tianjin, China)
• Yangyang Wang (Hebei University of Technology, Tianjin, China)
• Youxi Wu (Hebei University of Technology, Tianjin, China)
• Zhendong Wang (Northwest University, Xi'an, Shaanxi, China)
• Tianlin Jin (Center of China Urban Economic, Peking University, Beijing)
• Qingda Wei (School of Economics and Finance, Huaqiao University, Quanzhou, 362021, P.R. China)
• Xian Chen (School of Mathematical Sciences, Xiamen University, Xiamen, 361005, P.R. China)

Banned from publication in 4OR for usurpation of identity:

• Alireza Noruzi (Islamic Azad University, Ardabil, Iran)
• Hasan Jafari (Islamic Azad University, Ardabil, Iran)
• Tohid Banki (Islamic Azad University, Bilesuvar, Moghan, Iran)
• Mohsen Mohammadi (Payame Noor University, Tehran, Iran)

Banned from publication in 4OR for self-plagiarism, simultaneous submission, attempt at multiple publication or spamming:

• Alireza Nazemi (Shahrood University of Technology, Iran)
• Fatemeh Talebi (Shahrood University of Technology, Iran)
• Ankhbayar Chuluunbaatar (National University of Mongolia, Ulaanbaatar, Mongolia)
• Enkhbat Rentsen (National University of Mongolia, Ulaanbaatar, Mongolia)
• Can Jiao (University of the Chinese Academy of Sciences, Beijing, China)
• Yeran Tang (Industrial and Commercial Bank of China, Beijing, China)
• Xiaoyan Zhu (University of Chinese Academy of Sciences, Beijing, China)
• Seyed Rahim Moosavi (Department of mathematics, Yadegar-e-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran)
• Miriam F. Bongo (De La Salle University, Manila, Philippines)
• J. Angel Ida Chellam (Sri Ramakrishna Engineering College, Coimbatore, India)
• N. Sasikala (Kamala Institute of Technology & Science, Singapur, India)
• K. Praveen Kumar Rao (Kamala Institute of Technology & Science, Singapur, India)
• Chandrakala Mukku (Mahatma Gandhi Institute of Technology, Telangana, India)
• Vinodkumar Jacob (M.A. College of Engineering, Kothamangalam, India)
• K. Varada Rajkumar (Malla Reddy University, Hyderabad, Telangana, India)
• P. Praveen (SR University, Anantasagar, Hasanparthy, India)
• Ashok Kumar Yadav (School of Computing Science & Engineering, Galgotias University, Greater Noida, Uttar Pradesh, India)
• Vinit Kumar (Computer Science and Engineering, Galgotias College of Engineering and Technology, Greater Noida, India)
• Dr. Raj Kumar Yadav (University Institute of Engineering & Technology, Maharshi dayanand University, Rohtak-Haryana, India)
• Dr. Rajesh Mehta (Computer Science and Engineering Department, Thapar Institute of Engineering and Technology, India)
• Banavathu Sridevi (GITAM, Visakhapatnam, India)
• B. John Jaidhan (GITAM, Visakhapatnam, India)
• J. Hima Bindu (Vignan's Foundation for Science, Technology and Research, Vadlamudi, India)
• M. Uma Devi (Vignan's Foundation for Science, Technology and Research, Vadlamudi, India)
• R. Iyswarya (Sri Venkateswara College of Engineering, India)
• R. Anitha (Sri Venkateswara College of Engineering, India)
• Nikhil Kumar (Govt. College Bhoranj, Himachal Pradesh, India)
• S. Hari Krishna (Vignana Bharathi Institute of Technology, Hyderabad, India)
• Raman P. (Panimalar Engineering College, Chennai, Tamilnadu, India)
• L.V.R. Manoj Kumar (College of Business and Economics, Werabe University, Werabe, Ethiopia)
• Dr. Jun Lin (National Natural Science Foundation of China)
• Dr. Fei Jing (Natural Science Foundation of Shandong Province, China)
• Dr. Yifu Li (National Natural Science Foundation of China)